AT&T recently released their Femtocell.  This device plugs into your home (or small office) network, and uses your current ISP to provide strong cell coverage.  Currently, AT&T and Sprint are the only networks with full on femtocells.  T-Mobile has their "Hotspot @ Home" which enables Wi-Fi phones to have better calling via your broadband internet, but is not an actual cell tower.  AT&T's offering enables voice and data over the cell … [Read more...]